Squeezed light source on lithium niobate on insulator for GKP generation without periodic poling

Squeezed quantum states combined with a linear beamsplitter network and photon number resolving detectors can produce the holy grail in continuous-variable quantum computing, GKP states [1]. Using GKP states a universal fault-tolerant quantum computer can be made. Lithium niobate on insulators (LNOI) is an emerging platform suitable for producing squeezed states of light due to its ultra-low propagation loss down to 3 dB/m and high non-linear χ(2) coefficient [2]. </p

Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature

We report on X-ray scattering measurements of helical poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping the sample with 10 μm spatial resolution from 0.3 GPa to 36 GPa. We follow the strongest 00l reflection, which moves toward higher scattering angles with pressure indicating planarization of helical polyfluorene. Lateral inhomogeneity is increased for >10 GPa concomitant with the solidification of the pressure transmitting medium (a 4:1 mixture of methanol and ethanol). We also follow the 00l reflection with increasing temperature at the constant pressure of 4.3 GPa in neon. We observe a sharp shift toward higher scattering angles indicative of a phase transition at 167–176 °C

Measuring structural inhomogeneity of a helical conjugated polymer at high pressure and temperature

We report on X-ray scattering measurements of heli-cal poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] by mapping thesample with 10μm spatial resolution from 0.3 GPa to 36 GPa.We follow the strongest 00lreflection, which moves towardhigher scattering angles with pressure indicating planarizationof helical polyfluorene. Lateral inhomogeneity is increased for>10 GPa concomitant with the solidification of the pressure transmitting medium (a 4:1 mixture of methanol and ethanol) We also follow the 00l reflection with increasing temperature atthe constant pressure of 4.3 GPa in neon. We observe a sharpshift toward higher scattering angles indicative of a phase transi-tion at 167–176C

Stable Transmission of High-Dimensional Quantum States over a 2-km Multicore Fiber

High-dimensional quantum states have already settled their advantages in different quantum technology applications. However, their reliable transmission in fiber links remains an open challenge that must be addressed to boost their application, e.g. in the future quantum internet. Here, we prove how path encoded high-dimensional quantum states can be reliably transmitted over a 2 km long multicore fiber, taking advantage of a phase-locked loop system guaranteeing a stable interferometric detection